diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 12f02943dd4c..05a773b49437 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -51,10 +51,10 @@ jobs:
         include:
           - build_type: Netplay
             artifact_name: mainline-windows-netplay
-            build_config: -G "Ninja" -DCMAKE_BUILD_TYPE="Release" -DSLIPPI_PLAYBACK=false
+            build_config: -DCMAKE_BUILD_TYPE="Release" -DSLIPPI_PLAYBACK=false
           - build_type: Playback
             artifact_name: mainline-windows-playback
-            build_config: -G "Ninja" -DCMAKE_BUILD_TYPE="Release" -DSLIPPI_PLAYBACK=true
+            build_config: -DCMAKE_BUILD_TYPE="Release" -DSLIPPI_PLAYBACK=true
     name: "Windows ${{ matrix.build_type }}"
     runs-on: windows-2022
     steps:
@@ -71,8 +71,6 @@ jobs:
         with:
           toolchain: ${{ steps.rust_ver.outputs.rust_ver }}  # Pin to our specific Rust version.
           rustflags: ""  # Disable default injection of warnings = errors.
-      - name: Install ninja-build tool
-        uses: seanmiddleditch/gha-setup-ninja@v5 
       - name: Cache Utils
         uses: actions/cache@v4
         with: